Class Libraries & REST APIs for the developers to manipulate & process Files from Word, Excel, PowerPoint, Visio, PDF, CAD & several other categories in Web, Desktop or Mobile apps. Develop & deploy on Windows, Linux, MacOS & Android platforms.... Load ( "message.eml" ); var sopt = SaveOptions...SaveAllHeaders = true ; eml . Save ( "message.mhtml" , sopt ); Verwerken...